Health and disease Flashcards
Define health
A state of physical and mental well-being
What are some factors of health
Disease Diet Worries Smoking Drinking alcohol Exercise Life situations Substance abuse
How do you get cardiovascular disease
Smoking
No exercise
Fatty diet
What do harmful substances do to your body
They block blood vessels
How do you get type 2 diabetes
Poor diet
Little to no exercise
How does fat affect the body
Fat reduces effect of insulin. Fat slows down your metabolism
How do you get brain damage
Alcohol
What does alcohol do to the body
Alcohol is toxic and kills brain cells(all living cells) scar tissue is tough and stops the liver from working
Alcohol also causes strokes
How do you get liver failure
Alcohol
How do you get Lung disease
smoking
What does smoking do to your body
Over 60 toxic substances. Many are cancerous. Kills the cells/alveoli and preventsit from expanding
How do you get cancer
Carcinogens
Radiation
Factors of a benign tumour
Stays in 1 place
Inside a membrane
Grows very large, very quickly
Can cause pressure
Not cancerous
Features of a malignant tumour
Invades healthy tissue
Cells travel around the body
May form secondary Timor
Can destroy organs and tissue
Cancerous
Features of arteries
Away from the heart
Has a small lumen= high pressure
Elastic layer to resist pressure
Muscle adds pressure
Blood has further to go
Features of the veins
To the heart
Large lumen
Love pressure
Has valves
Slower movement
Features of capillaries
One cell thick
Surrounds cell and tissue
What are the 4 main pathogens
Virus
Fungi
Bacteria
Protist
Define pathogen
A micro organism that causes disease
How do pathogens grow
Binary fission
Define communicable
Can be passed on
What affects spread of disease
Hygiene
Diet
Money
Contact
Medical care
How close you are to other ill people
Examples of viral infections
Tobacco mosaic virus
HIV
measles
How do viral infections spread
Lives in a cell and reproducing causing the cell to burst and moves on to another cell destroying it
